The Tre Sassi Fort is located on the Valparola road, in a wild, lunar environment that inspired many legends of the Dolomites. It is accessible from the Falzarego Pass in a 2-minute drive.

The building has recently been restored from the damages of the war and those occurred in the thirties and forties when all the iron objects were removed (i.e. armour platings, rotating cupolas and iron beams), in an attempt to preserve - as historical evidence - the traces left by the bombardments, suffered during the Great War, which determined its evacuation.

The Fort is today a monument of the heavy and fascinating architecture, with thick walls of big masses of stone. Narrow loopholes and large windows open into its walls to create inside a highly suggestive atmosphere. And exactly here, inside this fort, is the site of the Museum of the Great War on the Dolomites.

Evidence of the combat from this area of the front are here exhibited, as well as photographs and documents telling the history of the mountain populations who were involved in the war. The explanations displayed and the ones given by the audio-guide for hire are in Italian, English and German. Admission is charged.

In the vicinity of the Fort there are the Valparola lake, with its large meadows, and Rifugio Valparola.